The Brew Cabin

I have a common drive way with a neighbour. They do not have block paving and we do. I have not had a kerb edge fitted to the common boundary and I am finding that a few edge blocks at the entrance to the drive are moving. Is this because I have no kerb (is a kerb a must) or is it more likley that the contractor did not concrete the edge blocks in correctly?

A kerb is not essential, it is merely a decorative addition to block paving. What is essential is that the edge of the paving, whether it's a kerb or a plain soldier edging, absolutely must be laid on and haunched with concrete, or some other restraining device, to prevent the paving from spreading onto your neighbour's plot.

So, if a block pavement has a kerb, that can be concreted-in and used as the restraining edge, or, as is the case with your drive, the edge blocks should be concreted-in. Can you lift out any of the loose blocks to ascertain whether they have been laid on concrete?